The magnifying power of a convex lens of focal length 10 cm, when the image
The magnifying power of a convex lens of focal length 10 cm, when the image is formed at the near…
7 years ago
Ray Optics
A thin convex lens of refractive index 1.5 has 20 cm focal length in air. If the lens
A thin convex lens of refractive index 1.5 has 20 cm focal length in air. If the lens is completely…
7 years ago
An object is seen through a simple microscope of focal length 12 cm.
An object is seen through a simple microscope of focal length 12 cm. What will be the angular magnification produced,…
7 years ago
A concave lens of focal length f forms an image which is 1/3 times the size
A concave lens of focal length f forms an image which is 1/3 times the size of the object. Then,…
7 years ago
The velocity of image when object and mirror both are moving towards each other
The velocity of image when object and mirror both are moving towards each other with velocities 4 ms⁻¹ and 5…
7 years ago
The sun light reaches us as white and not as its components because
The sun light reaches us as white and not as its components because Options (a) air medium is dispersive (b)…
7 years ago
Aperture of human eye is 0.2 cm. The minimum magnifying power of a visual
Aperture of human eye is 0.2 cm. The minimum magnifying power of a visual telescope, whose objective has diameter 100…
7 years ago
If critical angle for a material to air passage is 30°, the refractive index
If critical angle for a material to air passage is 30°, the refractive index of the material will be Options…
7 years ago
If the angle of minimum deviation is 60° for an equilateral prism, then the refractive
If the angle of minimum deviation is 60° for an equilateral prism, then the refractive index of the material of…
7 years ago
A microscope is having objective of focal length 1 cm and eye-piece of focal length 6 cm.
A microscope is having objective of focal length 1 cm and eye-piece of focal length 6 cm. If tube length…
7 years ago